Geeetech

Hi, I have one of my A20M extruder gear drives making a squeaking/squealing noise when it is retracting. It still extrudes correctly, just very annoying. I will be upgrading these extruders soon, is there any fix in the meantime? Any special lubrication etc?
Thanks

in my case it were the steppers that makes a lot of vibrations.
it helps a bit to tighten the frame screws to the stepper holder and remove the filament sensors

Check the FAQ section here.
Geeetech advises to use a drop of oil in the centre top hole in such cases.
Had the same problem - used INOX spray lubricant (same as but better than WD40).
Others that should work are Silicon and PTFE sprays.

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